﻿using Microsoft.AspNetCore.Mvc;
using Microsoft.OpenApi.Models;
using Swashbuckle.AspNetCore.SwaggerGen;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace Hx.Swagger
{
    /// <summary>
    /// 规范化文档自定义更多功能
    /// </summary>
    public class ApiActionFilter : IOperationFilter
    {
        /// <summary>
        /// 实现过滤器方法
        /// </summary>
        /// <param name="operation"></param>
        /// <param name="context"></param>
        public void Apply(OpenApiOperation operation, OperationFilterContext context)
        {
            // 获取方法
            var method = context.MethodInfo;

            // 处理更多描述
            if (method.IsDefined(typeof(ApiDescriptionSettingsAttribute), true))
            {
                var apiDescriptionSettings = method.GetCustomAttribute<ApiDescriptionSettingsAttribute>(true);

                // 添加单一接口描述
                if (!string.IsNullOrWhiteSpace(apiDescriptionSettings.Description))
                {
                    operation.Description += apiDescriptionSettings.Description;
                }
            }

            // 处理过时
            if (method.IsDefined(typeof(ObsoleteAttribute), true))
            {
                var deprecated = method.GetCustomAttribute<ObsoleteAttribute>(true);
                if (!string.IsNullOrWhiteSpace(deprecated.Message))
                {
                    operation.Description = $"<div>{deprecated.Message}</div>" + operation.Description;
                }
            }
        }
    }
}
